Thanks for all the info, I got great results with the 4" vanes with the mechanicals this fall but never quite got the results I was looking for with the fixed blades, I blamed it on the inconsistancy in spine/weight with the carbons. I think I'll give the 5" feathers a try. Either that or break done and buy some ACC's. I know what your are saying about the newer bows. With my old Reflex all I do is tune and my fixed bh's are right there. Not so easy with the Mighty Mite but well worth the extra work. Then again maybe it's the bow, I haven't bought a new one in a couple of years.